#include<stdio.h>
#include<string.h>
#include<windows.h>

void main()
{
	char ch1[] = "hallo world!";
	char ch2[] = "############";
    int left = 0;
    int right = strlen(ch1)-1;

    while(left < right)
	{
	   ch2[left] = ch1[left];
	   ch2[right] = ch1[right];
	   left++;
	   right--;
	   printf("%s\n",ch2);
	   Sleep(1000);
	}
}